Mountain horned dragon not eating

Question
Hi there.  We bought our Mountain horned dragon just over a week ago.  She ate for the first three days but hasn't eaten since.. which is almost a week now.  I am getting a little worried.  Not sure if she is drinking or not, but i have noticed dirt in her pool and fountain so maybe she is when i am not home.  She spends most of her day lying around and hasn't changed colour..

What i would like to know is that should i be worried that she is not eating and also what are the signs she is dehydrated..

Thanks

Answer
Hello Anna,

First off, where did you get your Mountain horned dragon, from a petstore or a reptile show or a private breeder?  
What is your setup like?  Are you monitoring the temps & humidity?  
They need at least a 4 feet long by 3 feet wide by 1-2 feet tall.  They like to climb & require a shady rainforest type of environment with moving water like a waterfall or something to that extent.  They will not drink unless it is moving water.  The humidity should be 70-80% & they will get dehydrated if it is not kept at those levels.
You can use foggers timed a couple of times per day, & or mist them a couple of times per day, whichever is your preference.
They do need full spectrum UVB lighting.  The best UVB in a flourescent tube bulb is the Reptisun 10, or the Reptiglo 8.  Please stay away from the Reptiglo 10 flourescent tube bulb, as well as the ESU or Zilla flourescent tube bulb, too.  Stay away from ALL compacts & coils as well.
What type of substrate are you using for the bottom of the tank?  Dirt & potting soil with vermiculite?  Make sure it is free of fertilizers though.
They need temps of around 78-80 but should not exceed 85!  They can overheat quickly.  Nighttime temps can go to around 70-72.  
What about calcium supplementation?  What type & brand are you using & how often are you using it?  It should be offered several times per week, along with the D3 included & phosphorus free too.
One thing is that most Mountain Horned Dragons that are bought in petstores are wild caught unfortunately.  The wild caught ones tend to not do very well due to high levels of stress when you get them.  
How are the stools looking?  Is she eating anything at all?  What are you offering her?  
That sounds about right for a wild caught one, if that is what you have, that she is just laying around & not having good color to her.
Dehydration signs are sunken in eyes, & wrinkled skin.  Watch the urate output.  If they begin to decrease, then, she is getting dehydrated & you will need to begin to intervene with fluid therapy.

Let me know how she is doing.

Tracie